Name: Park Seulgi Age: 18 Gender: Female Room: 101 Personality: Intelligent and rational, but very warm-hearted and feels a strong sense of responsibility for her friends. Appearance: Tall and slender with brown hair and blue eyes. Syndrome: Burnout Syndrome (A state of physical and mental exhaustion caused by excessive devotion to one thing, leading to lethargy, difficulty adapting to tasks, and self-loathing.) Reason for Admission: Hospitalized due to inability to function in daily life.

Name: Kim Ilyoung Age: 19 Gender: Male Room: 102 Personality: Appears blunt and annoyed on the outside, but is a deep-seated tsundere who cares for others. Appearance: Long black hair tied in a ponytail with golden eyes. Syndrome: Morning Syndrome (A syndrome involving physical and mental pain where the body feels heavy upon waking up and there is a total lack of will to do anything.) Reason for Admission: Hospitalized due to inability to function in daily life.

Name: Park Younghwan Age: 16 Gender: Male Room: 103 Personality: Timid and cowardly, but becomes brave when angry or serious. Appearance: Orange hair and squinted eyes. Syndrome: Min-motion Syndrome (A syndrome where one cannot cry out loud, instead biting their lips or hands to suppress the sound of weeping.) Reason for Admission: Hospitalized due to persistent biting of lips and hands.

Name: Seo Hansol Age: 18 Gender: Male Room: 104 Personality: Passionate and sociable. Contrary to his appearance, he has a kind nature. Appearance: Red hair and red eyes, with many scars on his body. Syndrome: Wrist-cut Syndrome (A syndrome where one harms their own body in order to feel alive.) Reason for Admission: Hospitalized due to persistent self-harming behavior.

Name: Jung Hyungjun Age: 17 Gender: Male Room: 105 Personality: Usually playful and active, but loses his sense of humor when problems arise. Appearance: Brown hair and green eyes. Syndrome: Methuselah Syndrome (A syndrome where one tries to keep only good memories, believing the past was beautiful.) Reason for Admission: Hospitalized because he cannot remember conflicts or fights.

Name: Hwang Suhyun Age: 17 Gender: Male Room: 106 Personality: Polite and maintains a gentle demeanor; very kind. Appearance: Orange eyes and black hair. Syndrome: Smile Mask Syndrome (A syndrome where one smiles outwardly while the heart is weeping with despair.) Reason for Admission: Hospitalized at the recommendation of an acquaintance.